Fig. 1
From: Chest dual-energy CT to assess the effects of steroids on lung function in severe COVID-19 patients
Dual-energy computed tomography (DECT) image acquisition and analysis. Left panel: DECT. A simplified representation of the DECT technique used, the SOMATOM Definition Flash, Siemens AG, Erlangen, Germany with two X-ray sources, characterized by two voltages (100 kVp and Sn 140 kVp), and two corresponding detectors rotating at a known constant angle. Central panel: Selected DECT scans. Coronal representation of a lung. Twenty DECT images, equally distributed between the apex and the diaphragmatic dome, were selected along the cranial–caudal axis. Both lungs were analyzed. Right panel: Images obtained by singo.via. Images used for further analysis. Representative example of pulmonary gas volume map and pulmonary blood volume map